Can I make the poblano sauce ahead of time?
Yes. Roast and blend the poblanos, cilantro, and aromatics up to 2 days ahead. Store in an airtight container in the fridge. Reheat gently and stir in cream cheese and sour cream just before tossing with pasta.
What if I can't find poblano peppers?
Substitute with Anaheim peppers (milder) or a mix of green bell peppers and jalapeños for similar heat and flavor. Adjust serrano peppers if you want to maintain spice level.
How do I know when the poblanos are properly roasted?
Roast until the skin is blackened and blistered all over, about 8–10 minutes over an open flame or under the broiler. Let them steam in a plastic bag for 5 minutes, then the skin will peel away easily.
Can this recipe be made vegetarian?
Yes. Replace chicken bouillon powder with vegetable bouillon and serve with sautéed mushrooms, black beans, or grilled tofu instead of chicken.
How thick should the sauce be?
The sauce should coat the back of a spoon. If it's too thick, thin with more milk or pasta water. If too thin, simmer for 2–3 minutes to reduce.